Bankr x402 SDK - Balance Queries
This skill should be used when the user asks "what are my balances", "how much ETH do I have", "check my wallet", "show my tokens", "portfolio value", "what tokens do I own", "NFT holdings", "how much USDC", "get token balances", "wallet contents", or any question about token balances, wallet contents, portfolio values, or NFT holdings across chains using the Bankr SDK.
How do I install this agent skill?
npx skills add https://github.com/bankrbot/claude-plugins --skill bankr-x402-sdk-balance-queriesIs this agent skill safe to install?
- Gen Agent Trust Hubwarn
The skill utilizes an unverified external Node.js package (@bankr/sdk) to handle sensitive wallet data and private keys. It relies on a natural-language-to-action execution model which may be susceptible to prompt injection if user input is not properly sanitized before being passed to the SDK.
- Socketwarn
1 alert: gptSecurity
- Snykwarn
Risk: MEDIUM · No issues
- Runlayerpass
1 file scanned · No issues
What does this agent skill do?
SDK Balance Queries
Query multi-chain token balances and portfolio data using natural language prompts.
Operations
| Operation | Example Prompt | Notes |
|---|---|---|
| Single token balance | "How much USDC do I have?" | Fastest query type |
| Multi-token balance | "Show my ETH, USDC, and DEGEN balances" | Single chain |
| All tokens on chain | "What tokens do I have on Base?" | Lists all holdings |
| Multi-chain balances | "Show my balances across all chains" | Slower, queries all |
| Portfolio value | "What's my total portfolio value in USD?" | USD conversion |
| Token value | "How much is my DEGEN worth?" | Single token USD |
| NFT holdings | "Show me my NFT collections" | Lists collections |
| NFT floor prices | "What's the floor price of my NFTs?" | External API calls |
Prompt Patterns
# Token Balances
"What are my token balances?"
"How much [TOKEN] do I have?"
"Show my [TOKEN] balance on [CHAIN]"
"What's my balance of token 0x..."
# Multi-Chain
"Show my balances across all chains"
"What are my balances on Base and Ethereum?"
"Compare my USDC holdings across all chains"
# Portfolio Value
"What's my total portfolio value in USD?"
"How much is my [TOKEN] worth in USD?"
"What's the total value of my Base holdings?"
# NFTs
"Show me my NFT collections"
"How many Pudgy Penguins do I own?"
"What's the floor price of my NFTs?"
Usage
import { BankrClient } from "@bankr/sdk";
const client = new BankrClient({
privateKey: process.env.BANKR_PRIVATE_KEY as `0x${string}`,
});
const result = await client.promptAndWait({
prompt: "What are my token balances on Base?",
});
console.log(result.response);
// "You have 150.5 USDC, 0.25 ETH, 1000 DEGEN on Base..."
Supported Chains
| Chain | Notes |
|---|---|
| Base | Default chain, fastest responses |
| Ethereum | Mainnet ERC20 and NFTs |
| Polygon | L2 tokens and NFTs |
| Solana | SPL tokens and NFTs |
Specify chain in prompt: "on Base", "on Ethereum", "on Polygon", "on Solana"
Related Skills
- sdk-wallet-operations: Client setup and configuration
- sdk-capabilities: Full list of supported operations
How can the creator link this skill?
Add the canonical catalog link to the repository README so users can inspect current installs and available audits. The publishing guide covers the complete discovery path.
<a href="https://skillzs.dev/skills/bankrbot/claude-plugins/bankr-x402-sdk---balance-queries">View Bankr x402 SDK - Balance Queries on skillZs</a>